The average speed of an object is found by dividing distance by time.
A basic numeric average is found by adding up the numbers in the set
and dividing by how many there are. How does this basic average relate
to average speed, or are they unrelated?

The Tri-State Soccer League is conducting a survey to determine if the
players want to change the style of soccer shirt. If they randomly
survey all players who wear size large shirts, is the survey biased or
unbiased? I'm not sure what those two words mean.

I've seen "relative error" defined both as "the absolute error divided by the true measurement" and "the greatest possible error divided by the measurement itself." These definitions seem to be inconsistent. Which one is correct?

I can find only one definition of range in the math dictionaries -
the difference between the smallest and the largest number in a set.
We are always talking about 'They range in age from, or they range in
height, or they range in weight, or they range in size, etc'. If
the only defintion of range is the difference, why do we say 'They
range...'?

A total of 50 juniors and seniors took a math test. The 35 juniors had
an average score of 80 while the 15 seniors had an average score of
70. What was the average score of all 50 students who took the test?

The median of the set {2,3,5,5,5,10} would be 5, but that leaves one
value greater than the median (10), and two values less than the
median (2 and 3). So how can 5 be a measure of central tendency, and
is there a different way to calculate the median in this case?